The video was revealed by f(x)'s Japanese agency Avex through their website, and it is the teaser video of "Hot Summer" Japanese version. It was 1 minute 40 seconds, a bit longer than regular teaser videos.

This video caught much attention because it was completely different from the Korean version of "Hot Summer" that f(x) worked with last year. They wore red outfits last year, but they wore white and blue outfits in the Japanese version.

The dance move of 'wiping sweat' is still the same.

Internet users who saw this commented, "This is completely different from Korean version" and "I want to see the full video."

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